Scaffold-bracket.



C. HABLER.

SCAFFOLD BRACKET.

APPLICATION min NOV. 29. 1910.

1,299,176. Patented Apr. 1,1919.

"MW/Air;

CHRISTIAN HADLER, OF WASHINGTON, DISTRICT OF COLUMBIA.

SCAFFOLID-BRACKET.

Application flied November 29, 1818.

To all whom it may concern:

Be it known that I, CHRISTIAN HAnLna, a citizen of the United States, residing at 1003 8th St. SE, Vashington, District of Columbia, has invented certain new and useful Improvements in Scatlold-lh'aclwts, of which the following is a specification.

This invention relates to improvements in clamps or supports, designed primarily for scaffolds.

The object of the invention is to provide means for quickly and see' 'ely clamping a support or brace to a post.

A further object of the invention is to provide a clamp wherein a toggle action-is utilized to effect a grip between adjacent parts, the element being so disposed that the greater the weight upported. the greater will be the clamping ellicienev.

The invention also eomprehends improve ments in the details of construction and arrangement of parts which will be hereinafter described and particularl; pointed out in the claims.

In the drawing Figure l is a perspective view of my improved clamp.

Fig. 2 is a vertical section of the aame: the parts being shown in dotted lines when applying the device to wast Fig. 3 is a plan New with parts broken away.

The numeral 1 indicates a U shap clamping member. and extending act-o same near its vertici-il endportion in a bolt 2, on which is mounted to have a alight rocking movement. a shoe jaw 13. Fitting within the free ends of the U-shape clamping member are the free ends; of a support ing U-shape member 4. a bolt 5, extending through the free ends of the two members above the horizontal centerge, as shown.

A block 6 is confined by the nupporting U-shape member near the free. ends and to one side. the pivot bolt 5.4m is secured rigidly in place by rivets or the like. show at 7. The block 6, is formed with a longitudinal threaded opening 8, disposed below the horizontal center of the U-shape support ing member, and extending therethrough is a bolt 9, the free end of which extends be yond the vertical plane of the bolt 5.

Pivoted on a bolt 10, near the outqawn d of the U-shape supporting member 4 is a combined brace and clamping membe'r 11, formed for convenience from a. single piece Speiiiflcation of Letters Patent.

Patented Apr. 1, 1919.

Scria1No.264,716.

of metal which inclines from the bolt 10, downwardly and is then bent. upwardly to form a vertical clamp or jaw L2. the upper end of which is bent outwardly to form a lip 13, which overhangs the bolt 5. The vertical member 12, cooperates with the clamping member 1 when the clamp is applied. as will later appear.

livoted on a bolt 14, extending through the U-shape supporting member 4 just in advance of the bolt Nb ia a latch 15, the inner end of which is bent upwardly and slightly outwardly. as at 16, to provide a contacting surface 113* and a finger grip, the contacting surface. being slightly in ad vance of the vertical plan-- of the vertical clamping member 1;. lhelatch 15. normallv rests on [he block and is therefore normally at a slight incline with referenee to the U-shapc supporting member 4 so as to form a wedging action when the clamp ia in use.

To operate the clamp. let it be supposed that it be dwircd to form a scail'old. then the U-shape clamping member 1. is slipped orer a post 20, the shoe 1 enga ing one edge. and the vertical clamping member 12 engaging the opposite edge. The bolt 9 is of course adjusted to set the vertical member 12 with reference to the shoe. to form sutiicicnt hpace for the post. The clamp haw ing been adjusted to lbc deaired height on the post. the latch in now thrown down and he conta ting m'i'ace on the free end eugages the edge of the poo. and the leverage thrown on the pivot bolt in a ts to tilt the U-shapc supporting member on the pivot bolt 5 and the end of the adjusting bolt 9 is forced into engagement with the vertical the post, and the vertical member 122 against the opposite edge of said post, thereby causing a clamping action. frame 21. is placed on the top of the U-shape suppor ng member. the weight of same coupled 1th that of a worlnnan. serves to increase the clamping aetion on the post. In fact the greater the weight on the supporting member, the more etlicicnt will be the clamping action. Furthermore as the boards 21, rest on the latch, they act to prevent the latch becoming disengaged, should it for any reason work out of with the edge of the post.

Should it be desired to readjust the clamp,

When a board or engagement member 1:! of the brace ll which results in the shoe being drawn tight against one edge of 2 j l the laleh is releawd and th upporting member 4 l tilted on its pivot whieh l'e' l(;l the rlamping aetion and permits free movement of the deviee.

From the foregoing de eription it will be seen that l have provided means whieh "Iii-Hind) act to rlamp the opposite edges of a post. and when set. the parts eoiiperate to grip in opposite di'reetions to engage the post. and that the lateh prevents mm'ement of the rhtmp when in latehing position. It will be further seen that when weight is plaeed on the supporting na-mla-r the clampmg action between the elamping elements 1 1 W- is materially increased.

liv'disposing the pivotal ronneetion between the two 'U-shape members. above a horizontal line drawn through surh mem bers, and looating the bolt 9 below this pivotal ('UlHNCtlOILtl loeltingaetion between the parts is produeed, a'ml imade the more effective when weight i applied to the U- shape supporting na-mber.

While I have shown my improved elamp as applied to a post to support a seal'i'old board. it is evident its use is in no wise limited in this regard, as it is intended that the device be employed wherever it be de sired to clamp members together.

hat I rlann i.':

l. A clamp comprising pivoted members, one of whit-h is provided with a pivoted jaw, an adjustable bolt, carried by one member and located out of the plane of the pivot connecting the members to engage said piv oted jaw, and a pivoted latch cooperating with said pivoted jaw to lock the two members in clamped position. v

2. A clamp comprising a pair of U-shape members having their ends interlitting one within the other, a pivot bolt connecting the interfitting ends above the horizontal eenter of said members, a block intone of said members, said block having a threaded opening transverse to and out of the phone of the pivot bolt, an adjusting screw in the threaded opening, and a combined brace and jaw pivoted in one of the members and havin its endarrangtal to be engaged by the a justir 'g serew, whereby when the member carrying the adjusting screw is tilted in one direetioti on its pivot the screw will engage the jaw and form with the companion member a grip on a post held therebetween.

Il. elamp eomprising a pair of U-aha'pe inmnbers pivoted together at their free ends beyond the horizontal center of said members. a screw earried b v one of said mem bers and loeated out of the plane. of the pivotal point between said members and at right angle In the same, a jaw mounted on one of the numbers in front of the screw, and a lateh eotiperating with the elamping member to hold the device in clamping position.

r. A elamp eomprising two members piv A elamp eomprismg a U-shape mem bet, a jaw loosely pivoted in said member, a seeond member )ivoted to the free ends of the U-shape mem a-r at a point beyond the horixonlal renter of said members, said second member having a threaded opening transverse to and out of the horizontal plane of the pivot between said members, a serew in the threaded opening, a jaw pivoted to said serond member and bent at its free. end to lie in the path of the screw. whereby when the jaws engage a post and said seeond member is tilted on its-pivot the serew engages the pivoted jaw and the latter and the first mentioned jaw are drawn together, and a latch pivoted to the seeond member and adapted to engage the side of the post to tilt said second member to effect the clampingaetion. I

6. 'A rlamp comprising pivoted members one of which is provided with a pair of arms and a jaw to embrace a post, a pivoted jaw mounted on the opposite member, andan adjustable bolt carried by the member on which the pivoted jaw is mounbed,,the bolt being loeated out of the plane of the pivot connecting the members to engage said pivoted jaw. t

In testimony whereof I aflix my'signatnre.

CHRISTIAN HADLER. 

